Wireless Mesh Network Security Routing Model Based On Blockchain And Reputation Mechanism

With the continuous development of blockchain technology,its combination with the Wireless Mesh Network(WMN)has become a hot research topic of today.Since both the WMN and the blockchain network have to relay data through a series of devices,this means that the network combined with the blockchain and WMM may suffer a series of routing attacks during routing.In order to solve this problem,this thesis conducts a study of wireless Mesh network security routing based on blockchain and reputation mechanism.Awireless Mesh network model(BRWMN)based on blockchain and reputation mechanism and a BRWMN’s proprietary routing protocol BR-GLOR are proposed.First,this thesis proposes two implementations of the BRWMN network model.The first scheme is a BRWMN network model(Petri-R-DPOS-BRWMN)constructed based on the reputation mechanism of the dynamic fuzzy Petri network trust model and the consensus mechanism of the R-DPOS algorithm.The second scheme is a BRWMN network model(Message-R-RAFT-BRWMN)constructed based on the reputation mechanism of the information-aware model and the consensus mechanism of the R-Raft algorithm.Both of these two schemes use the reputation mechanism to convert the information in the node operation process into the reputation-related value,and use the reputation-related value to identify malicious nodes and provide the basis for the consensus algorithm,thus ensuring the routing security of the network combined with the blockchain and WMN.Secondly,the special routing protocol BR-GLOR of BRWMN network model is proposed,which is improved on the basis of GLOR routing protocol.The BR-GLOR protocol uses the blockchain network service in BRWMN to provide services instead of the web server in GLOR,and adds a multi-level security(MLS)mechanism to the next-hop addressing mechanism,so that data packets can always be trusted.The data packets can always be forwarded in trusted nodes,so the routing of the combined network is more secure.Finally,this thesis takes Petri-R-DPOS-BRWMN and Message-R-RAFT-BRWMN as the running environment respectively.In Petri-R-DPOS-BRWMN,the malicious node discovery rate,packet transmission rate,network throughput,and end-to-end delay of the three routing protocols,BR-GLOR,HWMP,and GLOR,are compared and analyzed in the face of different attacks.In Message-R-RAFT-BRWMN,the malicious node discovery rate,packet transmission rate,network throughput,and end-to-end delay of the three routing protocols,BR-GLOR,HWMP,and GLOR,are compared and analyzed in the face of different attacks.At the same time,the malicious node discovery rate,packet transmission rate,network throughput,and end-to-end delay of BR-GLOR under different attacks are also compared and analyzed.The analysis results show that the malicious node discovery rate,packet transmission rate,network throughput,and end-to-end delay of BR-GLOR protocol running in BRWMN are better than those of HWMP and GLOR protocols running in BRWMN.The BR-GLOR protocol running on Petri-R-DPOS-BRWMN and Message-RRAFT-BRWMN has its own advantages and disadvantages in terms of malicious node discovery rate,packet transmission rate,network throughput,and end-to-end delay.This shows that the BRWMN network model and its proprietary BR-GLOR routing protocol can effectively guarantee the routing security of the network combining blockchain and WMN.